Science & technology | Mirror worlds

Digital twins are enabling scientific innovation

They are being used to simulate everything from bodily organs to planet Earth

Illustration of an anatomical heart, half of which is drawn as a wire mesh
Illustration: Daniel Liévano

SCIENTISTS ARE no strangers to computer models. Some of the very first uses of computers to simulate reality, in fact, were built by physicists keen to understand the behaviour of subatomic particles, and meteorologists hoping to predict the weather. Over the 75 or so intervening years, computer modelling has become an integral part of scientific practice, informing everything from predictions of climate change to the monitoring of pandemics.

This article appeared in the Science & technology section of the print edition under the headline “The heart of the matter”

From the August 31st 2024 edition

Discover stories from this section and more in the list of contents

Explore the edition

Discover more

Dr Dorothy Bishop.

Elon Musk is causing problems for the Royal Society

His continued membership has led to a high-profile resignation

Legal Amazon preservation area borders the field for soybean planting.

Deforestation is costing Brazilian farmers millions

Without trees to circulate moisture, the land is getting hotter and drier


Robot mixing at Toyota Research Institute.

Robots can learn new actions faster thanks to AI techniques

They could soon show their moves in settings from car factories to care homes


Scientists are learning why ultra-processed foods are bad for you

A mystery is finally being solved

Scientific publishers are producing more papers than ever

Concerns about some of their business models are building

The two types of human laugh

One is caused by tickling; the other by everything else